In March, we wrote about Ether, a service that lets users charge callers by the minute. A similar service is offered by JyvePro, which works with Skype. Writers, tutors, web designers, consultants, lawyers, therapists and anyone else with something to say and sell, can download the JyvePro plug-in (an add-on piece of software). This connects a payment system to the user’s Skype account, and works like a taxi meter, tracking minutes talked, and invoicing customers once a conversation is over. Calls can be five minutes or two hours — the systems bills to the minute.